Change8

langchain==1.2.11

📦 langchainView on GitHub →
2 features🐛 3 fixes🔧 3 symbols

Summary

This release introduces support for OpenRouter and automatic server-side compaction in OpenAI, alongside several dependency updates and bug fixes related to model initialization and detector output.

Migration Steps

  1. Update `langgraph-checkpoint` dependency from 3.0.1 to 4.0.0 if using the specific version range mentioned in the internal bump.
  2. Update `langsmith` dependency from 0.4.42 to 0.6.3 if using the specific version range mentioned in the internal bump.

✨ New Features

  • Support for automatic server-side compaction in OpenAI integrations.
  • Introduction of the `langchain-openrouter` provider package.

🐛 Bug Fixes

  • Normalized custom detector output to prevent KeyError in hash/mask strategies.
  • Fixed support for anthropic-bedrock in `init_chat_model`.
  • Allowed Gemini 3 models to use `ProviderStrategy` with tools.

Affected Symbols